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Complete Guide

E-Commerce Google Ads Audit Checklist: Complete Account Review Framework

Find Hidden Issues Bleeding Your Budget

16 min readUpdated January 2026

Most e-commerce accounts have hidden issues bleeding budget and blocking growth. Use this comprehensive checklist to identify exactly what's holding you back.

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1Section 1: Conversion Tracking

1.1 Primary Conversion Setup

Critical Question: Is the account using proper conversion tracking with transaction ID, revenue, and product-level data?

Recommended Setup:

  • Native Google Ads purchase tag (preferred) OR
  • Shopify Google/YouTube app integration
  • NOT GA4 import as primary

Why Native Tags Outperform GA4:

  • 10-15% more attribution to Google Ads
  • Better alignment with Google's bidding algorithms
  • More accurate ROAS reporting

Best Practice: Use native Google Ads tag as primary, link GA4 for comparison (set to secondary). Consider server-side tracking for accounts spending $20K+/month.

1.2 Product ID Parameter

Critical for: Dynamic remarketing showing the correct products

How to Verify:

  1. Navigate to Tools → Data Manager
  2. Select Google tag → View Stats
  3. Check for "product" or "product_id" parameter hits

If Missing: Dynamic ads will show random products instead of products users actually viewed.

1.3 Attribution Settings

  • Data-Driven Attribution: Should be enabled for all purchase conversions
  • Auto-Tagging: Must be enabled in Account Settings
Business TypeRecommended Conversion Window
Impulse purchases7-30 days
Considered purchases30-60 days
Long sales cycles60-90 days

2Section 2: Campaign Structure Audit

2.1 Performance Max Structure

Check for:

  • ☐ Asset groups properly segmented by product category
  • ☐ Brand exclusions enabled to protect brand campaigns
  • ☐ New customer acquisition settings configured
  • ☐ Audience signals added for each asset group
  • ☐ Product feed optimization (titles, descriptions, images)

2.2 Shopping Campaign Structure

Check ItemWhat to Look For
Product segmentationTop performers in separate campaigns with higher bids
Negative keywordsBrand terms excluded if running separate brand campaign
Bid strategyTarget ROAS or Maximize Conversion Value with sufficient data
Priority settingsLow priority for catch-all, high priority for key products

2.3 Search Campaign Structure

  • ☐ Brand and non-brand campaigns separated
  • ☐ Display network disabled in Search campaigns
  • ☐ Location targeting set to "Presence only"
  • ☐ Match types appropriate for conversion volume
  • ☐ Negative keyword lists applied across campaigns

2.4 Data Fragmentation Check

Warning Signs:

  • 15+ campaigns splitting limited budget
  • Campaigns with fewer than 15 conversions/month
  • Duplicate targeting across campaigns
  • Overlapping keywords cannibalizing each other

3Section 3: Product Feed Audit

3.1 Title Optimization

Best Practice Formula: Brand + Product Type + Key Attributes (Size/Color/Material)

BeforeAfter
Blue Running ShoesNike Air Max 270 Men's Running Shoes - Navy Blue Size 10
Wireless HeadphonesSony WH-1000XM5 Wireless Noise Canceling Headphones Black

3.2 Product Description Check

  • ☐ Includes primary and secondary keywords
  • ☐ Features benefits, not just specifications
  • ☐ No promotional language (Google disapproves)
  • ☐ Accurate sizing/variant information

3.3 Image Quality

  • ☐ High resolution (at least 800x800 pixels)
  • ☐ White or neutral background for main image
  • ☐ Multiple images per product (lifestyle + detail)
  • ☐ No watermarks or promotional overlays

3.4 Product Categories

  • ☐ Google Product Category correctly assigned
  • ☐ Custom labels for internal segmentation
  • ☐ Product types aligned with site navigation

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4Section 4: Audience Strategy Audit

4.1 Remarketing Setup

  • ☐ Dynamic remarketing tag properly installed
  • ☐ Product ID parameter passing correctly
  • ☐ Audience lists building (check membership count)
  • ☐ Customer list uploaded for Customer Match

4.2 Audience Segmentation

Audience SegmentRecommended Strategy
Cart abandoners (0-7 days)High priority, aggressive bidding
Product viewers (0-30 days)Medium priority, moderate bids
Past purchasers (30-180 days)Cross-sell/upsell campaigns
High-value customersVIP treatment, exclusive offers

4.3 Customer Match Utilization

  • ☐ Customer email list uploaded
  • ☐ Match rate verified (30-70% typical)
  • ☐ Similar audiences enabled
  • ☐ Exclusion lists for recent purchasers

5Section 5: Bidding and Budget Audit

5.1 Bidding Strategy Assessment

Conversion VolumeRecommended Strategy
<15 conversions/monthMaximize Clicks or Manual CPC
15-50 conversions/monthMaximize Conversions
50+ conversions/monthTarget ROAS or Target CPA

5.2 ROAS Target Verification

  • ☐ Target ROAS aligned with margin requirements
  • ☐ Not so aggressive it limits spend
  • ☐ Historical ROAS achievable (within 20%)

5.3 Budget Allocation Check

  • ☐ Top-performing campaigns not budget-limited
  • ☐ Low-performers not consuming disproportionate budget
  • ☐ Brand campaigns receiving appropriate (usually small) allocation
  • ☐ Seasonal adjustments planned and implemented

5.4 Lost Impression Share

Check in campaign metrics:

  • Lost IS (Budget): >20% means increase budget
  • Lost IS (Rank): >30% means improve ads/bids

6Complete Audit Checklist

Quick Reference Checklist

Conversion Tracking

  • ☐ Native Google Ads purchase tag as primary
  • ☐ Product ID parameter working
  • ☐ Data-driven attribution enabled
  • ☐ Auto-tagging enabled
  • ☐ Appropriate conversion windows

Campaign Structure

  • ☐ Brand vs. non-brand separated
  • ☐ Display network disabled in Search
  • ☐ Location = "Presence only"
  • ☐ No excessive campaign fragmentation

Product Feed

  • ☐ Optimized titles with keywords
  • ☐ High-quality images
  • ☐ Accurate product categories
  • ☐ Custom labels for segmentation

Audiences

  • ☐ Remarketing tags installed
  • ☐ Customer lists uploaded
  • ☐ Audience segments created
  • ☐ Recent purchaser exclusions

Bidding & Budget

  • ☐ Strategy matches conversion volume
  • ☐ ROAS targets achievable
  • ☐ No excessive budget limitation
  • ☐ Top performers properly funded

Key Takeaways

Use native Google Ads purchase tags instead of GA4 imports for 10-15% more attribution

Verify product ID parameter is passing correctly for dynamic remarketing

Enable Data-Driven Attribution for all purchase conversions

Separate brand and non-brand campaigns with appropriate budget allocation

Optimize product feed titles with Brand + Product Type + Key Attributes

Create audience segments based on recency and value (cart abandoners, past purchasers)

Match bidding strategy to conversion volume—don't use Target ROAS with <50 conversions

Monitor Lost Impression Share to identify budget and rank opportunities

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Frequently Asked Questions

Perform a comprehensive audit quarterly, with lighter weekly checks on key metrics (conversion tracking, budget pacing, top-performer performance). After major changes like platform updates or new campaign launches, do a focused audit within 2 weeks.